Rheem H.S.I. Igniter and Flame Probe 071420
071420 Suits Everhot unit 632275 an Rheem unit 631275
Igniter and Flame Probe: The igniter rod is manufactured from Silicon Nitrate. When power is applied, the rod glows to ignite the gas. This system is known as hot surface ignition (HSI)
The flame rod is manufactured from Canthal-D and forms part of the flame proving system. A small electric current is passed from the ignition module to the flame rod and then through the flame to earth. This is known as flame rectification.
Note: The flame proving system will only work when the water heater is connected to a correctly polarised and earthed neutral mains supply.